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SD-AT1000H
SAFETY PRECAUTION FOR SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class 1
Requirements. However, the following precautions must be
observed during servicing to protect your eyes against exposure
to the Laser beam.
(1) When the cabinet has been removed, the power is turned
on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for several
seconds to detect a disc. Do not look into the Pickup Lens.
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
Set name
Withstanding Voltage Tester
Test voltage
Set time
Set current (Cutoff current)
Unit
Judgment
OK: The "GOOD" lamp lights.
NG: The "NG" lamp lights and the buzzer sounds.
Connecting speaker wires
Make sure to leave the AC power lead disconnected when connecting the
speakers.
To prevent accidental short circuit between
speaker wires to the speakers first then to the unit.
1
Connect the wires to the speakers.
Speaker terminals
Label
2
Connect the other end to the main unit.
Label
Speaker Plug
Caution:
The supplied speakers are exclusively for SD-AT1000H. Do not connect them
to other equipment, and do not connect other speakers to SD-AT1000H. It
may cause malfunction.
Do not mistake the
and , and right and left terminals of the speaker leads. (The
right speaker is placed on the right when you face the unit.)
Do not let the bare speaker wires touch each other.
Do not stand or sit on the speakers. You may be injured.
Insert the speaker plug fully with the rising side facing up.
Hold the speaker plug when removing it from the main unit.
Pulling the lead may cause malfunction to the unit.
set value
4.7 kV DC
3 secs
3 mA
and
terminals, connect the
Red
Tube
Black
Plug in with the rising
side facing up.
Incorrect
(2) The Laser Power Output of the Pickup inside the unit and
replacement service parts have already been adjusted prior
to shipping.
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens
at any time.
(5) CAUTION - Use of controls or adjustments, or performance
of procedures other than those specified herein may result
in hazardous radiation exposure.
WITHSTANDING
VOLTAGE TESTER
AC
OUT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
– 2 –
PROBE
UNIT
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
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